Improvement in screens for separating oats from wheat



.A. G.-FERRE-N.

Grain Screen.

No. 36.052. Patented July 29,1862.-

Willi! PEYERS Photo-Lilhugmphun w D C UNITED STATES PATENT OFFICE.

A. O. FERREN, OF DEOORAH, IOWA, ASSIGNOR TO HIMSELF AND F. M. CLARK.

IMPROVEMENT IN SCREENS FOR SEPARATING OATS FROM WHEAT.

Specification forming part of Letters Patent No. 36,052, dated July 29,1862.

To all whom it may concern:

Be it known that I, A. G. FERREN, of Decorah, in the county ofWinneshiek and State of Iowa, have invented a new and useful Improvementin Screens for Separating Oats and Cockle from Wheat; and I do herebydeclare that the following is afull, clear, and exact description of thesame,'reference being had to the accompanying drawings, making a part ofthis specification, in which Figure 1 is a plan or top View of myinvention; Fig. 2, a side sectional elevation of the same, taken in thelinear t, Fig. 1; Fig. 3, an end View of the same.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in attaching aseries of parallel vertical stripsto the upper surface of the screen at such a distance apart that theoats and cockle will be prevented from passing down on the screensidewise, but retained lengthwise, and thereby prevented from passingthrough the screenwith the wheat which, being nearly round, can passthrough the screen,while the'oats and cockle,being oblong, cannot passthrough, and are discharged from the depressed end of the screen.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents the frame of the screen,which may be of rectangular orother suitable form, and or represents a series of wires, which aresecured transversely to the frame A at a suitable distance apart. Theupper or feed end of the screen has a board or plate, I), attached,which receives the grain to be screened, and this board is directlyunderneath the hopper, into which the grain is placed and from which itpasses on the screen.

To the upper surface of the frame A there is attached longitudinally aseries of vertical plates, 0. These plates extend the'whole length ofthe screen, and they are placed at such a distance apart that oats andcockle will be retained upon it in a lengthwise position, the spacebetween the plates not admitting of the oats and cockle turningsidewise. (See Fig. 1, in which an oat, d, is shown in red.)

The oats, it will be seen, are longer than the width of the spacesbetween the wires a, and consequently they will be prevented frompassing through the screen. The same may be said of the cockle. Thespaces between the wires a, however, are sufficiently wide to admit ofthe wheat passing down between them, and as the grains of wheat arenearly round and much shorter than the oats, they can turn between theplates 0 and pass through the screen as The invention,althoughexceedingly simple,

may be applied to a screen at a small cost.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In combination with a screen, a series of parallel vertical plates, 0,attached to the frame A of the screen, to operate as and for the purposeherein set forth.

A. O. FERREN. Witnesses:

J. BEEMER,

D. H. HUGHES.

